I have a love-hate relationship with DS etalons. The one I tested in not that good, I spent a long time adjusting everything and I cannot see a big difference

I used to think that but Mark alerted me to the possibility of prominences and surface in the same shot. Same exposure for both (one shot only), increased gamma and at the expense of a slower speed, but a nice result I think.
Robert

I'm guessing you run with low gamma on the camera when you are doing your disk shots Pedro? That's why the SS/DS side by side shot the DS looks much darker but with little difference in contrast to the SS shot. My DS shots I run with neutral gamma, sometimes run higher gamma if the proms are feint. There is no right or wrong way and different ways produce different results.